<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>11.5.1内置动画</title>
    <script src="../../../../../lib/JQuery3.7.1.js"></script>
    <style>
        div{
            width: 100px;
            height: 100px;
            border: 1px solid black;
        }
    </style>
</head>
<body>
    <div>

    </div>

<script>
    function showOver(){
        console.log('over')
    }
    $('div').show(1000);
</script>
</body>
</html>